Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Error code: 429 - {'error': {'message': 'You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https://platform.openai.com/docs/guides/error-codes/api-errors.', 'type': 'insufficient_quota', 'param': None, 'code': 'insufficient_quota'}}
 ###Tabelas: 
CREATE TABLE community_health_workers (worker_id INT, age INT, cultural_competency_score INT); INSERT INTO community_health_workers (worker_id, age, cultural_competency_score) VALUES (1, 35, 80), (2, 40, 85), (3, 45, 90);
SELECT age_group, AVG(cultural_competency_score) FROM (SELECT CASE WHEN age < 40 THEN 'Under 40' ELSE '40 and over' END AS age_group, cultural_competency_score FROM community_health_workers) AS subquery GROUP BY age_group;